It is interesting how many online services are continually reinventing themselves in order to achieve competitive differentiation, to call the attention of an increasingly saturated market.This strategy of differentiation is more common in online business sectors or more mature. This is the case of URL shorteners. Today we present you 15 plus shorteners little known, but which is worth to take a look to see what they can offer. They have chosen the same strategy: to offer extra value to its users. What better plus you get to earn money while using the service?1. Tiny.ccSource: http://tiny.cc/

2. Is.gdSource: http://is.gd/

3. Ow.lySource: http://ow.ly/url/shorten-url

4. Bit.lySource: http://bit.ly/

5. MoourlSource: http://moourl.com/

6. Yep.itSource: http://yep.it/

7. TinyurlSource: http://tinyurl.com/

8. MiniurlSource: http://miniurl.com/index.php

9. SnipurlSource: http://snipurl.com/site/index

10. Short.ieSource: http://short.ie/

11. IdekSource: http://idek.net/

12. DoiopSource: http://doiop.com/

13. NotlongSource: http://notlong.com/

14. Safe.mnSource: http://safe.mn/

15. AdF.ly - Free url shortening service that will pay you $4 for 1000 visitors. You can Also refer users and earn 20% commission, $5 is minimum payout through Paypal Or Alertpay.

16. ity.im - Free url shortening service website where you can earn $4 for 1000 visitors you bring. Refer people and earn 5% of their earnings, $0.10 sign on bonus when they verify their email address, $0.15 sign on bonus when they earn a minimum of $1.0, minimum payout only $3 with paypal.